This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 24 |
| 3 | 77 |
| 4 | 126797 |
| 5 | 12714624 |
| 6 | 129079888464 |
| 7 | 77885018846797 |
| 8 | 4009565647007922 |
| 9 | 40750555532000002 |